No start situatuon - ZR-1 Net Registry Forums

Dafink · 06-13-2017

Anyone have experience with this -

Car won't start, battery is strong, put it in neutral and roll it a foot or two and it starts right up? As if there are no problems?

Anyone know what the issue is or what causes this?

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QB93Z · 06-13-2017

Can you provide more information? What year is the car? Do you have any after-market equipment related to anti-theft or remote start? Does the starter motor operate when the key is turned? Does this happen all the time or just some times? Have you done any recent maintenance on the car? Are you using the same ignition key that use to start the car?

Jim

Dafink · 06-13-2017

1991 bone stock (except exhaust), recently swapped the injectors, happens every so often (all 3xs at my inlaws so it feels way worse than it was), the starter does not move at all, same chipped ignition

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QB93Z · 06-13-2017

Try this diagnosis when the starter does not turn with the ignition key in Start:

Look at the Battery Voltage meter on the instrument panel. As you turn the ignition key see if the battery voltage meter needle moves to a lower voltage.

If the needle does not move it means that the starting circuit is not sending voltage to the starter motor solenoid. Trouble shoot the starter circuit; clutch switch, VATS, ignition key, etc.

If the meter does move to a lower voltage and the starter does not turn than the starter solenoid (built into the starter) needs to be rebuilt or the starter replaced.

Jim

Bruce · 06-15-2017

Ive had the same thing on my 91. Parked outside my workshop for a while, came back and tried to start the engine - nothing, no starter motor sound at all. I pushed it into the workshop, grabbed out my set of GM service manuals.

Clutch switch has already been disabled, so I followed the start wire along under the dashboard to ....... an engine immobiliser unit someone had installed in conjunction with an alarm system. Seems the relay contacts were shagged. So I promptly removed the relay and resoldered the offending wire connections and havent had a problem since.

Dafink · 09-06-2017

So I was getting slight movement on the battery gauge, I left and came back the next day. The car started right up. Could a starter fail intermittently?

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QB93Z · 09-06-2017

Quote:

Originally Posted by Dafink

So I was getting slight movement on the battery gauge, I left and came back the next day. The car started right up. Could a starter fail intermittently?

Yes, it is a common failure mode to operate intermittently.

Jim

Dynomite · 09-07-2017

Like Jim says.......it is very common to have this most common Starter Issue and most common it is intermittent.

See Inspection, Testing and Reconditioning the Valley, Starter, and Coils

The Starter Solenoid is shown in the left photo with slight burnt contacts in right photo.

The Solenoid contacts in left photo were wire brushed clean in right photo.

06-13-2017	#1
Dafink Join Date: May 2016 Location: Bergen County, NJ Posts: 44	No start situatuon Anyone have experience with this - Car won't start, battery is strong, put it in neutral and roll it a foot or two and it starts right up? As if there are no problems? Anyone know what the issue is or what causes this? Sent from my iPhone using ZR-1 Net Registry

06-13-2017	#2
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,687	Re: No start situatuon Can you provide more information? What year is the car? Do you have any after-market equipment related to anti-theft or remote start? Does the starter motor operate when the key is turned? Does this happen all the time or just some times? Have you done any recent maintenance on the car? Are you using the same ignition key that use to start the car? Jim __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member

06-13-2017	#3
Dafink Join Date: May 2016 Location: Bergen County, NJ Posts: 44	Re: No start situatuon 1991 bone stock (except exhaust), recently swapped the injectors, happens every so often (all 3xs at my inlaws so it feels way worse than it was), the starter does not move at all, same chipped ignition Sent from my iPhone using ZR-1 Net Registry

06-13-2017	#4
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,687	Re: No start situatuon Try this diagnosis when the starter does not turn with the ignition key in Start: Look at the Battery Voltage meter on the instrument panel. As you turn the ignition key see if the battery voltage meter needle moves to a lower voltage. If the needle does not move it means that the starting circuit is not sending voltage to the starter motor solenoid. Trouble shoot the starter circuit; clutch switch, VATS, ignition key, etc. If the meter does move to a lower voltage and the starter does not turn than the starter solenoid (built into the starter) needs to be rebuilt or the starter replaced. Jim

06-15-2017	#5
Bruce Join Date: May 2016 Location: Whangarei New Zealand Posts: 29	Re: No start situatuon Ive had the same thing on my 91. Parked outside my workshop for a while, came back and tried to start the engine - nothing, no starter motor sound at all. I pushed it into the workshop, grabbed out my set of GM service manuals. Clutch switch has already been disabled, so I followed the start wire along under the dashboard to ....... an engine immobiliser unit someone had installed in conjunction with an alarm system. Seems the relay contacts were shagged. So I promptly removed the relay and resoldered the offending wire connections and havent had a problem since.

09-06-2017	#6
Dafink Join Date: May 2016 Location: Bergen County, NJ Posts: 44	Re: No start situatuon So I was getting slight movement on the battery gauge, I left and came back the next day. The car started right up. Could a starter fail intermittently? Sent from my iPhone using ZR-1 Net Registry

09-07-2017	#8
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,788	Re: No start situatuon Like Jim says.......it is very common to have this most common Starter Issue and most common it is intermittent. See Inspection, Testing and Reconditioning the Valley, Starter, and Coils The Starter Solenoid is shown in the left photo with slight burnt contacts in right photo. The Solenoid contacts in left photo were wire brushed clean in right photo. __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 09-07-2017 at 06:33 AM.